2157099653 has 2 divisors, whose sum is σ = 2157099654. Its totient is φ = 2157099652.

The previous prime is 2157099613. The next prime is 2157099673. The reversal of 2157099653 is 3569907512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2001399169 + 155700484 = 44737^2 + 12478^2 .

It is a cyclic number.

It is not a de Polignac number, because 2157099653 - 2²⁶ = 2089990789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2157099598 and 2157099607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2157099613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078549826 + 1078549827.

It is an arithmetic number, because the mean of its divisors is an integer number (1078549827).

Almost surely, 2^2157099653 is an apocalyptic number.

It is an amenable number.

2157099653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157099653 is an equidigital number, since it uses as much as digits as its factorization.

2157099653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 510300, while the sum is 47.

The square root of 2157099653 is about 46444.5869074104. The cubic root of 2157099653 is about 1292.0819800323.

The spelling of 2157099653 in words is "two billion, one hundred fifty-seven million, ninety-nine thousand, six hundred fifty-three".